Fourdrinier machine



A. .I. DAVIES.

FOURDRINIER MACHINE.

APPLICATION men JUNE 24, ms.

1,399,008. atented Dec- 6, 1921.

6 .1 76 -41 1 2 21 3/4 25 m i I l //VI/'/VTL7P ALBERT 0,4 W55 ATTK ALBERT Jenn ravine, or KENOG-AMI, CANADA.

FOUBDEINIER MAGHIN E.

; Specification of Application filed. June 24 To all who-m it may concern:

Be it known that I, ALBERT J. DAVIES, a subject of Great Britain, residing at Kenogami, in the Province of Quebec and Do minion of Canada, have invented a new and useful Improvement in Fourdrinier Machines, of which the following is a specification. g

This invention relates to Fourdrini er ma chines and is in the nature of an improvement on my United States Patent No. 7 1,231,717, wherein a method of reciprocating the suction-box is shown; and it has for its principal objects the elimination of partsand the lessening of the wear of use.

The main features of this invention comprise an elastic eccentric rod that will permit of a rigid connection of its free end to the suction-box, and a flexible, tensile guide to control the motions of the box.

As these motions are small, it is possible to gain the necessary flexibility in the rod without unduly weakening the same a thrusting agent, for the rod must act both in tension and in compression, therefore, it is to be understood that this invention is limited to small eccentricities of throw.

In my previous patent, referred to, I made use of a fixed guide and a rubbing friction that would, in time, cause a wear tending to throw the eccentric out of alinement and require adjustment frequently. I have here changed this thrust or compression guide to one that acts in tension, one that is adapted to swing with the box and thus greatly reduce the wear.

The adjustable features of both rod and guide have been retained, but I now mount the eccentric on the suction end of the box so that the rod may occupy a horizontal position; it being understood that the box is removed from the opposite end, as before.

In'the drawings, which illustrate one embodiment of this invention,

Figure l is a cross-sectional elevation of a portion of a Fourdrinier machine, broken away to bring both ends into the view.

Fig. 2 is a plan section on line 22 of Fig. l.

Fig. 3 is a side elevation, in section on line 3-3 of Fig. 2.

In the drawings, I have shown my special side-rail 1 as being secured, by bolts 2, on the ordinary fixed side-rail 3 of a common form of machine; although it is to be understood that I do not limit myself to this or Letters Patent.

1919. Serial No. 306,348.

other illustrated portions of the invention,

except as within the scope of the appended clalms.

The box 4 has the usual handles 5, to which are pivotally attached the oscillatory rods 6, the latter being mounted in the removable cap-pieces 7 through the agencyof rat-e ten nee. e, 1922i.

the ball-socket 8. The suction-tube 9' is 2 shown with a flexible connection 10 topermit the necessary purpose well ex patent, referred to.

In Fig. l, I show, at theright, a scarf 11 vibrations of box 1, for a cut in the under side of rail 34, to give the clearance necessary for vertical adjustment. In the same fi 'ure, at the left, I have shown this scarf marked 12) as'c'ut in the top of the end of box-cover 13, this scarf not extending under wire 14. Either method may be employed at both ends, as

this feature is not germane to this invention.

The driving shaft 15 is provided with an eccentric 16 upon which the split box 17 is mounted. The eccentric rod comprises a threaded bar 18 having an enlarged end 19 adapted to swivel (for adjustment purposes) within the coupling 20, and a flattened portion 21 that possesses sufiicient elasticity to yield to the throw of the eccentric 16 and still permit the free end 22 to be rigidly secured, as by bolts 23, to one of the handles 5. Adjustment is obtained through the threaded portions 18 and 24.

For maintaining the alinement of box 4 against the pull of wire 14, which moves in the direction of the arrow shown in Fig. 2, I provide, at each end of the box, a flexible member 25, one end of which is attached to a swivel bolt 26, this bolt being mounted in a block 27 secured to side-rail 3 by bolt 28. At the opposite end of member 25, I.

provide a link 29 adapted to engage a hook 30, said hook being threaded into another of the handles 5 and locked by the nut 31 (Fig. 3). When the box is to be removed, rods 6 are unshipped and then box 4: is pried to the left (Fig. 3) until link 29 may disengage hook 30. Adjustment of member 25 is obtained by the slot 32 in block 27 (Fig. 2), although other means may be employed for this adjustment without departing from the spirit of my invention. It will be noticed that the free end of member 25 moves with box 4; and the wear of motion is limited to the eye-bolt 26 and hook 30 and, hence, is negligible, as compared to a rubbing, complained in my previous pression guide such as is shown in my previous patent. Furthermore, by employing a chain for member 25, each li'nlrmay yield independently in accommodation to the motion of box 4, thus lessening the wear on eye-bolt 26 and hook 30. While I show and" prefer to use a chain, it is to be understood that member 25 may be a rigid eye-bolt,

Without departing from the spirit of my invention, as the essential feature of the guide is its tensile action.

box; incombination with meansfor moving said box; and tensile means for guidlng-saldmotions.

2. In a Fourdrinier machine, amovable suct1onbox; and means for supporting said box; in combination with means for moving said box; tensile means forguiding said motions; and means for adjusting said guiding means.

3. In a Fourdrinier machine, a suctionbox; an oscillatory support for said box; means for oscillating said box; and a tension guide for said oscillations.

1. In a Fourdrinier machine, a movable suction-box; a driving shaft; an eccentric on said shaft; an-elastic eccentric rod connected, at one end, with said eccentric; and means for rigidly connecting the opposite end of said rod with said box.

5. In a Fourdrinier machine, a movable suction-box"; a driving shaft; an eccentric on said shaft; an adjustable, elastic eccentric rod' connected, at one end, with said eccentrio; and means for rigidly connecting the opposite end of said rod with said box.

6. In a Fourdrinier machine, a suctionbox; anoscillatory support for said box; a shaft; an eccentric on said shaft; an elastic rod connected, at one end, with said eccentrio; and removable means for rigidly con necting the opposite end of said rod with saidbox. y a

7. In a Fourdrinier machine, a movable suction-box; means for moving said box;

and flexible means for guiding said motions.

8. In a Fourdrinier machine, a movable suction-box; and means for supportmg sand box; in comblnation w1th means for moving.

said box; and a flexible guide; for said .motions oomprlsmg a support, a member having one end movably connected with said support, and means for movably connecting. the opposlte end of-said member with said box. a r

ALBERT JOHN DAVIES. 

